Ministry of Energy, People's Republic of China
Approved: March 23, 1991
Implementation: August 1, 1991
1. Scope and Field of Application
This standard specifies the technical requirements, test methods, inspection rules, markings, packaging, and storage for coal bed injection pumps (hereinafter referred to as water injection pumps).
This standard applies to axial drive swash plate plunger valves with electric water pumps that transport water or liquids with properties similar to water.
It does not apply to crank rod drive reciprocating pumps.
2. References
GB 7784 - Motor Reciprocating Pump Test Method
GB 10111 - Random Sampling Method Using Random Numbers
3. Technical Requirements
3.1 Water injection pumps must meet the requirements of this standard and be manufactured according to approved drawings and technical documents.
3.2 Self-made parts must pass tests before assembly. Purchased parts must have certificates or pass tests before being assembled.
3.3 Materials must be certified or tested before use.
3.4 The exposed surface of the product should be painted with a smooth coating, firm adhesion, consistent color, and free from defects such as wrinkles, peeling, or bubbles.
3.5 After assembly, the pump should operate stably without abnormal sounds, vibrations, temperature rises, or leaks.
3.6 During operation, the temperature rise of lubricating oil should not exceed 40°C.
3.7 During operation, the leakage of the water seal should not exceed 1.0 L/h, and other seals should not have external leakage.
3.8 During operation, the noise level should not exceed 85 dB(A).
3.9 The safety valve of the product should be sensitive and reliable.
3.10 Under rated conditions, the volumetric efficiency of the water injection pump shall comply with the provisions of Table 1.
Table 1
| Project | Rated Discharge Pressure, MPa | Pump Speed, r/min | Volumetric Efficiency, % |
|---------|-------------------------------|-------------------|--------------------------|
| | <8 | 735 | ≥92 |
| | <8 | 960 | ≥92 |
| | ≥8 ~ 16 | 735 | ≥92 |
| | ≥8 ~ 16 | 960 | ≥92 |
Key Words: Coal Seam Water Injection Pump Technical Conditions
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